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# setCustomSpacing(_:after:)

Specifies the custom spacing, in points, between a specified view and the view that follows it in the stack view.

```
func setCustomSpacing(_ spacing: CGFloat, after view: NSView)
```

## Parameters

`spacing`

The custom trailing space to use between the `aView` view and the one that follows it, in points.

    Default value is [`useDefaultSpacing`](/documentation/AppKit/NSStackView/useDefaultSpacing)    , which indicates that the view does not use custom spacing.

`view`

The view whose trailing spacing you are setting.
  
  > Important:
  > If you attempt to set custom spacing for a view that is not in the stack view, the system raises an exception.

## Discussion

For a horizontal stack view, this method sets custom spacing between a specified view and the view to its right when the user interface direction is left to right. (See the inherited [`userInterfaceLayoutDirection`](/documentation/AppKit/NSView/userInterfaceLayoutDirection) property for information on layout direction.) For a vertical stack view, this method sets custom spacing below a specified view.

If you set custom spacing for a view, it overrides the stack view’s default spacing for that view, as set in the [`spacing`](/documentation/AppKit/NSStackView/spacing) property.

A stack view retains custom spacing across layout updates. Custom spacing for a view is lost if you remove the view from the stack view or specify a new value.

## See Also

[`spacing`](/documentation/AppKit/NSStackView/spacing)

The minimum spacing, in points, between adjacent views in the stack view.


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